Leer loader



J. V. DONNER LEER LOADER 2 Sheets-Sheet 1 Filed Oct. 27, 1935 9 0M NM QM Q t INVENTOR J. V. DONNER LEER LOADER Filed Oct. 27, 1933 2 Sheets-Sheet 2 INVENTOR Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE 2 Claims.

My invention relates to leer loaders, and includes apparatus for transferring glassware from a blowing or pressing machine to an annealing leer.

One object of my invention is to provide an improved form of apparatus for placing the articles upon a leer belt or conveyer, in noncontacting relation with one another, and in symmetrical arrangement;

My invention in one of its forms is illustrated in the accompanying drawings, wherein Figure 1 is a plan view of the apparatus; Fig. 2 is a view taken on the line IIII of Fig. 1; Fig. 3 is a view taken on the line III-III of Fig. 1;

Fig. 4 is a plan view, on an enlarged scale, of a portion of the mechanism of Fig. 1, and Fig. 5 is a side elevational view thereof.

The apparatus is shown as employed for transferring glassware from a mold table I by a conveyer 8, an elevator or lifter 9, and a conveyer it to a leer belt I l. The ware l2 may be transferred from the molding machine I to the conveyer 8 in any suitable manner. Frequently, the conveyer which initially receives the ware from the molding machine is located at a lower plane than the leer belt conveyer, and in this case, an elevator or lifter 9 is required for raising the ware to a point where it can be transferred to the conveyer Hi.

In the present instance, a rotating arm or wiper i3 is employed for pushing the articles off the conveyer 8 to the lifter 9, and after the lifter is elevated, a rotating arm or wiper l4 pushes it from the lifter to the belt I0. Pushers [5 are employed to transfer the articles from the conveyer ID to the leer belt H, such pushers being operated in predetermined sequence as hereinafter explained.

The pushers l5 are slidably supported in cross bars l6 and I1 and are normally held in their retracted positions by springs I 8, one of which is provided for each pusher. Each pusher I5 is provided with a roller 20, as shown more clearly in Figs. 4 and 5, and these rollers are each engaged by a cam 2| that is secured to a shaft 22, which is journaled in the side arms 2324 of the transfer apparatus.

A series of spacer bars 26 which serve also as 50 stops for limiting traveling movement of the articles with the coneveyer II) are likewise slidably supported in the cross bars l6 and ll of the framework and are yieldably held in their retracted positions by springs 25. Weights and 55 pulleys could, of course, be substituted for the springs. These 'bars are provided with cam rollers 21 that are engaged by cams 28 each of which may be formed integrally with its associated cam 21, but set somewhat in advance thereof as shown more clearly in Fig. 5, so that each .5 spacer rod 26 will be pushed forward across the conveyer M in advance of its associated pusher l5.

The shaft 22 is driven from a suitable electric motor 30 or the like, through a clutch 3|, a 10: sprocket chain 32, a reducing gear device 33, a shaft 34, a sprocket chain 35, a shaft 36, bevel gears 31, a shaft 38, a pinion 39 and a gear wheel 40, the latter-named gear wheel 40 being secured to the shaft 22. 1

It will be seen that as the shaft 22 rotates, the cams 2| and 28 are driven to periodically advance the pushers I5 and the spacing rods 26, respectively, each spacing rod being pushed forward in advance of its associated pusher, so that it will 20 be engaged by an article being advanced by the carrier If], to stop further advance thereof, and permit the article l2 to be pushed onto the conveyer belt II in spaced relation to a preceding article, as shown in Fig. l, in order that the 25 articles will not be in contact with one another on the conveyer belt. The leer belt II can, of course, be driven in any suitable manner, either continuously or step-by-step.

The shaft as drives a counter shaft 4| which has bevelled gear connection with a shaft 42, which in turn has beveled gear connections with vertical shafts 43 and 44. The shaft 43 carries the wiper arm l3 for pushing articles off the conveyer 8 to the lifter 9, and the shaft 44 carries the 35 wiper l4 for pushing articles off the lifter 9 to the conveyer Ill.

The lifter 9 is slidably supported in a vertical guide 45, and has rack teeth meshing with an oscillatory gear wheel 46 which is mounted on a shaft 46m. A pinion gear 41 is mounted on the shaft 46a and meshes with a segmental gear 48, that is formled with a crank 49, which is pivotally supported in an upright member of the framework. A link 5| connects the crank 49 to a pivoted lever 52 that has a roller which contacts with a cam disc 53 that is secured to the shaft 4|. A spring 54 maintains the cam roller or lever 52 in engagement with the cam 53. As the shaft 36 rotates, the crank 49 is oscillated about its pivot to effect rotative movements of thegear wheel 45, whereby the lifter 9 is raised and lowered.

The wipers l3 and M are simultaneously driven to pass across the upper surface of the belt 8, 55

d i is and the lifter, respectively, to effect transfer of articles from theconveyer 8 to the conveyer [0. A stop bar 55 is positioned above the conveyer 8, in order to, prevent travel of the articles past the point at which they will be swept from the conveyer 8 by the Wiper l3. 1 In the operation of the apparatus, the-articles are transferred to conveyer H! as heretofore explained. The pairs of cams 2l-28 are offset relative to one another circumferentially of the shaft 22, so that said bars are successively brought rear sides of the cams 2l-28 fall away quite abruptly relative to the front sides thereof, so that the bars l5 and 26 will snap back quickly as soon as an article has been transferred to the conveyer, to thus avoid obstructing movement of succeeding articles. 7 e

In order to secure synchronism between the moving parts, and particularly between the conveyer 8 and wiper l3, the lifter 9, and the wipers I4, I may drive the conveyer '8 by the motor which drives the wiper arms, and the cams 2 l--28. To this end I have shown a shaft 51 driven from the shaft 34 by bevel gears 58, and which drives a sprocket chain 6 I which in turn has driving connection with a shaft 62 that drives conveyer 8.

I claim as my invention:

1. The combination with a leer belt, of apparatus for transferring articles thereto, comprising a conveyer movable in proximity to the belt, a series of stop bars movable across the conveyer to individually limit traveling movement of articles, a series of pusher bars movable across the conveyer to effect transfer of the articles to the leer belt, pairs of rotatable cams, each pair being arranged to operate a stop bar and. a pusher bar, and a shaft for supporting said cams, the pairs of cams being offset relative to one another in directions circumferentially of said shaft.

2. The combination with a leer belt, of appara-- tus for transferring articles thereto, comprising a conveyer movable in proximity to the belt, a series of stop bars movable across the conveyer, to individually limit traveling movement of articles, a series of pusher bars movable across the conveyer to efiect transfer of the articles to the leer belt, pairsof rotatable cams, each pair being arranged to operate a stop bar and a. pusher bar, and a shaft for supporting said cams, the pairs of cams being olfset relative to one another in directions circumferentially of said shaft, and that portion of each cam which operates the stop rod being positioned in advance of that portion which operates the pusher bar.

JOHN V. DONNER.

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